Traffic Proximity Data
Mapped data on high-volume roadways used to estimate residents' exposure to diesel particulate matter and nitrogen dioxide from freight and passenger vehicles.
Related terms
Diesel Particulate Matter The fine soot expelled from diesel-burning engines (trucks, buses, ships, generators). Classified as a likely human carcinogen and a major contributor to pollution near highways and ports. Nitrogen Dioxide A reddish-brown toxic gas, primarily a byproduct of vehicle exhaust and power plants. Inflames airways and helps form smog and acid rain. Particulate Matter Microscopic solid particles or liquid droplets suspended in air, including dust, soot, and smoke. PM2.5 (fine particles) is small enough to enter the bloodstream through the lungs.